Liquid dispenser



Feb. 17, 1948. s. MABBQTT LIQUID DISPENSER Filed Feb. 14, 1944 3 Sheets-Sheet l s. M. ABBOTT LIQUID DISPENSER Filed Feb. 14, 1944 Feb. 17, 1948.

3 Sheets-sheaf 3 chamber 50 is cylindrically shaped with a wide angle funnelshaped lower portion which communicates with an inlet passage leading from applies pressure to the liquid in chamber 50. closing the ball check valve 52, and forces the liquid out through one of the two discharge passages 54 into one of two riser tubes 55. Each riser tube 55 is inserted in a circular opening 56 in the circular bottom plate It and is maintained by a welded connection 51. A ball check valve 58 in the funnel-shaped bottom of each circular opening 56 prevents liquid returning to the chamber 50 through the discharge passage 54 when the pump piston 43 is raised. Fluid pumped into the riser tube 55 enters a passage 59 (Fig. 6) in a support 60 for the liquid dispensing tubes 2| and is exhausted through passage 6| in the liquid dispensing tubes and out of passage 62 (Fig. 2) in the discharge nozzles 22.

Through the mechanism before described the depression of each foot pedal 23 (Fig. 3) raises its respective pump piston 43 (Fig. 5) against the action of the spring 45. When the foot pedal 23 (Fig. 3) is released, the action of the spring 46 (Fig. 5) lowers the pump piston 43 and returns the foot pedal 23 (Fig. 3) to its initial position.

In addition to serving in the capacity as riser tubes, the riser tubes 55 (Fig. 5) provide the clamping means whereby the entire liquid container i5 is held together. The upper end of each riser tube 55 is threaded for a nut 53 which maintains the bottom plate Hi, the central section II, and the topplate l8 in an assembled relation. Gaskets 54 at the top and bottom ,of the central section prevent leakage of fluid between the central section and the top plate and between the central section and the bottom plate. Since the riser tubes 55 are offset from the center of the liquid container a screw 65, which engages with a threaded opening in the top of the irregular casting 31, co-operates with the riser tubes 55 to maintain the liquid container |5 in its assembled condition. Fluid may be inserted in the top of the liquid container |5 through an opening 65 closed by a knurled hand nut 61.

A novel feature of this liquid dispenser resides in the manner in which the dispensing tubes 2| are mounted to the liquid container l5 so that they may be secured in one of several pro-selected positions. To this end each support 60 ,(Fig. 6), to which the liquid dispensing tubes 2| are secured, is mounted upon one of the two riser tubes 55 with its lower reduced end inserted therein and is provided at its lower end with a plurality of U-shaped openings 68 (Fig. 7) adapted to engage a pin 69 (Fig. 6) securely fastened within the upper end of.the riser tube 55. Thus, the

support 60 may be set in any pre-selected position wherever the U-shaped openings 63 may embrace the pin 69. In order to maintain each support 60 in such pre-selected position, a nut III is secured to the support 63 by means of a ring 1| journaled in annular grooves 12 in the support 60 and the nut 10. The nut mates with the threads in the upper portion of riser tube 55 and maintains the U-shaped openings 58 in contact with the pin 69. A gasket 13 prevents leakage 4 at the joint between the upper end of the riser tube 55 and the nut 10. When it is desired to adjust the liquid dispensing tubes 2| to a new position, it is necessary only to loosen the nut 10, place the dispensing tube in its new pre-selected position, and then re-tighten the nut 10, thereby securely maintaining the device in any desired position.

The soap dispenser just described is particularly adaptable for use with liquids having a corrosive action upon ordinary pump parts. This 1 is because the disclosed pump structure makes no use of glands and the like which are ordinarily quite susceptible to sticking and corrosion when used with corrosive liquids. In such case it is advisable that the pump parts be made of a metal which is resistant to such corrosive action. If

' such is done, however, it is frequently found to be impossible to find a suitable material for the spring 46, since corrosion resistant metals sometimes do not have the proper qualities needed for lasting spring action. Accordingly, an alternative construction is suggested wherein the spring 46 is so placed it will not come in contact with the fluid to be used in the container, preferably being placed outside of the soap container.

One such alternative construction is illustrated in this application and may use the same general construction features described above, with the exception that the flexible steep tape 32, the pulley 39, the axle 40, the guard 44, and the spring 46 are eliminated and the alternative structure is substituted.

In place of each steel tape 32, pulley 39 and axle 45, the alternative construction utilizes among other things a rigid steel rod 14, Fig. 8, the lower end of which is fastened to the bell crank 28 with the fastener 33. Each rod 14 extends upwardly within the tube I4 and has its upper end connected to one side of a crank 15 by means of a pin 16. Each crank 15 comprises two elongated members Tl maintained in spaced parallel relation, Fig. 10, and is pivotally mounted at the upper end of the casting 31 upon a pin 18. The other side of the crank 15 is connected to the upper end of a short rigid connecting linkJB with a pin 80, Fig. 9. The lower end of the link 19 is fastened to the upper portion 42 of the piston 43 with the pin 4|.

The use of the rigid connections just described permits the removal of the spring 45 from a place in which it may come in contact with the liquid, and permits its replacement by a spring 8| having a similar function but located exteriorly of the liquid container [5. As illustrated, each spring 8| is mounted within the base ll of the dispenser, Fig. 8. One end of each spring 8| is fastened to the pin 29 on each bell crank 28, and the other end is fastened to the fulcrum 25 for each foot pedal 23. Through the use of the described linkage, depression of the foot pedal 23 stretches the spring 8| and moves the link 26 to the left, the bell crank 28 in a counterclockwise direction, the rod 14 downwardly, the crank 15 in a clockwise direction, Fig. 9, the link 19 upwardly, and the piston 43 upwardly, thereby causing the inrush of fluid 53 into the chamber 50 of the pump. When the foot pedal 23 is released, then the spring 8| returns all of the operating mechanism to its initial position and expels the fluid from the chamber 50, out through the discharge passage 54, and thence out of the dispensing tubes as described before.

A feature of the alternative linkage over the flexible tape linkage, in addition to that of fife-365030 eenahlingi thenmanufiacture:ofeaopumpmearly :corrrosionoprooLziszthe featureithatzthe:mechanical :adrantage obetweenithesmovement of the front gpedaliZSz-andthe pistomAS-cmayfloe selectedzlowthe :designercto hisztaste. :It'hasZ-been'; found, forcin- -stanceithat an excellent locationforithe fulcrum 'ypinfllloof the cranks'lda i a position. ciosertocthe whereby theilever'arm 16-4 8' is. considersablyzshorter than; the lever arm' 'ld-tflfl. Through .ithis fulcrum arrangement :short strokes of r the pedali23rproducgfullstrokes ofwthe pistonii43 and zthe time requiredrfor eachioperation :of the pump i.-isreducedzconsiderably.

'i'Ihe use of :.the:-alternative Ilinkage -iurther is very r-adaptable -to the 1 manufacture of the disnpenser in quantity productionsince most: :of the anew;;linkage :-n1ay :be made-of inexpensive :metal :istampings, an important' iactor in reducing: the .cost:per dispenser -in quantityproduction.

'0ne= of the problems -attendantthe construction of a pumpfor liquid dispensers is the problem of-sticking valves. Frequently the dispensers: are not used for some time and 'thevalves may 'bescome stuck i-n-their seats; thereby preventing operation of the pump. This sticking may be elimimated by keeping the inlet valve-away from its seat whenever the pump isnot in use. A method of accomplishing this result may be through the :zprovi'sion-f -a constructionsimilar to that illustratedl.in =Fig. 11. In-thisconstruction the valve --seat 8'2-f0r the=inletball check va-lv e 52 is -10- seatedat the-side of the chamber 50 and slightly s above its lowermost-point 83. Between the point -BZnand the valve-seatE82 the chamber 50'- has its lowermostsurface arranged in -aslpe 84- so that "the ball valve 52 may roll-'to" the point 83-when the pump is idle. When this-construction is used, the upward 1 movement -'of the pump piston 43 draws thelifluid into thechambenbll through the inletvpassage fi l Ihen, upon a subsequent lower-ing or: the piston 43, -the-pressure *within the -chamber '50 is raised and fluid is exhausted -through the inlet passage' 5 l and the discharge .passage i l. I-Iowever, the pressure'conditions and :the how or fluid-almost instantaneously cause the tbailcheck valve- 52' tomoveirom the'point--83- up -the slope il-i-arid -to become seated inits seat 82, and all-of the fluid is expelled out the discharge passage 54.

Changesmaybe made in the form, construction, and arrangement .of ,the,..parts without departing from the spirit of the invention or (sacrificing any; of; itsrzadvantagesa and :the right is hereby reserved to mak allssuch changes as fairly fall within the scope .-of .the following claims.

'Iheinvention is herebyclaimed as follows:

21.,A fluid dispenser embodying a pedestal, a rreservoiriior fluid-atthe top ofsaid pedestal, a ipump'iin said-reservoir said pump embodying a z'idis'charge --conduit, a discharge spout for the cpumpadjustable to-several discharge positions} in a' horizontal planeabout -a vertical axis, means for operating-the pump an'd means on' thespout and on the discharge conduit movable out of cooperating relation for releasing the spout for relative adjustment with relation to the conduit, and into co-operating relation for maintaining the spout in any of its adjusted positions.

2. In a liquid dispenser having an outlet pipe member, a discharge spout member selectively adjustable on said pipe member to any one of several discharging positions in a horizontal plane about a vertical axis, interengaging means comprising detents on one member, and detent notches-non the:otheri-forzcmazlntaining siaidzdis charge spout inranylnnecofsseveralcdischarging "positionsssaidt discharge spmitizbeinghbddily movable: in a: directioni lengthwise pfathesontllet pipe i 5 membergto :seat arfdrunseats sai'dzdetent witlnrespectto said notches.

3. In 'a If liquid idispenserL-having 1 a "pedestalpza "pedal carried bysaid pedestal;aacolumrrmounted 'on :said pedestal, a reservoir rmounted i on rsaid column, a vertical tube ."open zatoboth:-ends,:the

-lower end of vvhich openslintothe interioraofcthe column an-dl the upper rend: ofuwhich :opensuinto the --interior o'f the reservoir, a :pump Ibarrel in said :reservoir anda :pump piston iwvithin :said

r415 npurnp barrel, "'means -for operating said rnump -'pi'ston,---saidmeans comprisingsa' crank: pivotally mounted acent the upper en'ds ofzsaid vertical tube and=:said :pump :barri'alga rrigid reciprocable :member extending through.said verticaltubmand 1 through "said columnponei end :of said member being operatively connected to one sidehof said crank an'd the 1 other being operativ'ely. connected with said pedal, a rigid reciprocable linkextending from' said pump -barrel, one .en dssof saidi link being connected to theother si'de of: saidi crank and theother being: operatively'connectedawith "said pump piston, 'an'd resilient means locate'd exteriorly .of the reservoir=and operatively *con- -=nected =With= said pump piston,-said means being adapted tozurge-zsaid: pump! piston in: one direction.

ill-n -a liquid dispenser having a cpedestal, -'a pedal carried -by-sai'd pede'stab-a column -mounted on said pedestal, '-a reservoir -mounted =-on' said onlumna-verticaltube openat 'both'ends, the

' lower end of: which tubewopens into the interior :of the" column and'the upper end" of Which 'tu-be opens into-the interior of the reservoin -a pump 'barrel in sai'd reservoiranda pump piston within #40 saidpump barrel,- means for operating said pump of the column'- ,ari d-the upper endof which" tube opens 'into the' interior of the *reservoir; a'purnp barrelin said reservoir anda pump 'piston within said 'pump barrelp-means for *operati-ng "said pump piston 'com-prising pulley "pivotall-y 0 -moun-te'd adjacent the upper ends of said'vertical tube =and-said pump" barrel, *traction means extendingthrough said vertical tube and column "and operatively connected with" said pedal, "said traction means having afiexible-portion:riding on I said pulleyand connected with sai'd'pump'piston whereby to move the same in said barrelin'one direction in response to actuation of the pedal, and spring means urging said piston in'the opposite direction in said barrel.

6. A liquid dispenser embodying a discharge tube and a discharge spout connected therewith and adjustable with respect thereto, to one of several predetermined positions in a horizontal plane about a vertical axis, said tube and nozzle 75 being provided, one with a. pin and the other with recesses to receive said pin for maintaining said spout in any one of the selected positions.

7. A liquid dispenser embodying a base, a hollow standard supported thereby, a container carried by the standard, a hollow extension on the standard projecting into and terminating short of the top of the container, a pump barrel within said'container and having communication therewith, valve mechanism for controlling said communication, a discharge outlet conduit communicating with the pump and extending to the outside of said container, a discharge nozzle, said pump embodying .a piston, a manually operable member mounted upon said base, means operatively connecting said member with said pump piston, through said standard and the extension thereof, and a pivotally mounted element adjacent the end of said extension, which element cooperates with the last said means in the actuation of the pump piston by the said manual means.

8. A liquid dispenser embodying a base, a hollow standard supported thereby, a container carried by the standard, a hollow extension on the standard projecting into and terminating short of the top of the container, a pump barrel within said container and having communication therewith, valve mechanism for controlling said communication, a discharge outlet conduit communicating with'the pump and extending to the outside of said container, a discharge nozzle, means connecting said nozzle to said conduit for adjustment into difierent positions with respect thereto. means for maintaining the nozzle in each of its adjusted positions, said'pump embodying a piston, a manually operable 'member mounted upon said base, means operatively connecting said member with said pump piston, through said standard and the extension thereof, and a pivotally mounted element adjacent the end of said extension, which element co-operates with the last said; means in the actuation ofthe pump piston by the said manual means.

9. A liquid dispenser embodying a base, a hollow standard supported thereby, a container carried by the standard, a hollow extension on the standard projecting into and terminating short of the top of the container, a pump, barrel within said container and having communication therewith, valve mechanism for controlling said communication, a discharge outlet conduit communicating with the pump and extending to the outside of said container, a discharge nozzle, said pump embodying a piston, a manually operable member mounted upon said base, means operatively connecting said member with said pump piston, through said standard and the extension thereof, a pivotally mounted element adjacent the end of said extension, which element co-operates with the last said means in the actuation of the pump piston by the said manual means, and means other than the said manual means for moving the pump piston in one direc- 10. A liquid dispenser embodying a base, a hollow standard supported thereby, a container carried by the standard, a hollow extension on the standard projecting into and terminating short of the top of the container, 2. pump barrel within said container and having communication therewith, Valve mechanism for controlling said communication, a discharge outlet conduit communicating with the pump and extending to the outside of said container, a discharge nozzle, said pump embodying a piston, a manually operable member mounted upon said base, means operatively connectingsaid member with said pump piston, through said standard and the extension thereof, a pivotally mounted element adjacent the end of said extension, which element co-operates with the last said means in the actuation of the pump piston by the said manual means, means connecting said nozzle to said conduit for adjustment into different positions with respect thereto, and means embodying interlocking portions between the nozzle and conduit, movable into and out of interlocking engagement for maintaining the nozzle in each of its adjusted positions.

11. A liquid dispenser embodying a base, a hollow standard supported thereby, a container carried by the standard, a hollow extension on the standard projecting into and terminating short of the top of the container, a pump barrel .within said container and having communication therewith, valve mechanism for controlling said communication, a discharge outlet conduit communicating with the pump and extending to the outside of said container, a discharge nozzle extending radially from said conduit and container, means connecting said nozzle to said conduit for adjustment with respect thereto and to said container, means for maintaining the nozzle in each of its adjusted positions, said pump embodying a piston, a manually operable member mounted upon said base, means operatively connecting said member with said pump piston, through said standard and the extension thereof, and a pivotally mounted element adjacent the end of said extension, which element co-operates with the last said means in the actuation of the pump piston by the said manual means.

SCOTT M. ABBOTT.

REFERENCES CITED The following references are of record in the dim of this patent:

Name Date 173,444 Chapman Feb. 15, 1876 1,713,517 Boe May 21, 1929 1,607,855 Winkley Nov. 23, 1926 716,087 Nicolay Dec. 16, 1902 1,916,394 Spring ,July 4, 1933 1,061,099 Miller May 6, 1913 1,947,086 Hillyard Feb. 13, 1934 

